That was why it took me so long to discover I have ADHD (which I got diagnosed with in my 20s, after I had already graduated university).

I recognized challenges I was having, but I both had the issue from the meme and also the issue from your comment. I was a pretty good student despite the ADHD and just developed habits for powering through or "just dealing" with the symptoms. It's a shame, cause now that I'm medicated, it's like night and day. All those periods where I struggled to meet deadlines because I couldn't concentrate... Many of those could have gone away if I had discovered this sooner.